Nasa 'flying saucer' tests Mars tech

A flying saucer-shaped vehicle was sent high into the atmosphere via a balloon to trial a new type of parachute and an inflatable Kevlar ring that could help slow down a spacecraft as it approaches the Red Planet's surface. All of the equipment appeared to work apart from the parachute, which failed to deploy fully. The experiment was sent up from Hawaii.

Nasa hopes the lessons learned will enable it put heavier payloads on Mars in the decades ahead. The current limit is about one-and-a-half tonnes. If humans are ever to go to the planet, this mass capability will have to rise to well beyond 10 tonnes. Saturday's test vehicle, known as the Low Density Supersonic Decelerator (LDSD), ditched in the Pacific after its flight.

Teams were despatched to try to locate the demonstrator so that its data recorder could be recovered. This will give engineers the most detailed information on what precisely happened during the experiment. Video cameras on the ground and on the LDSD captured most of the flight.

The helium balloon was launched from the US Navy's Pacific Missile Range Facility in Kauai at just after 08:40 local time. It took over two hours to raise the saucer-shaped vehicle to roughly 35km, whereupon it was released. A rocket motor then kicked the LDSD on up through the stratosphere to above 50km, and to a velocity of Mach 4 (four times the speed of sound), the sort of conditions a spacecraft approaching Mars might encounter.

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Certainly, a lot of testing of all equipment is needed to make sure that these expensive missions, especially to Mars go well- NASA is doing the right thing and hopefully learning fast from errors detected in tests here on Earth
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